Photosynthesis Relationships of Chlorella Species

Winokur, Morris

doi:10.1002/j.1537-2197.1948.tb05210.x

Cited by 16 publications

(12 citation statements)

References 18 publications

(9 reference statements)

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“…The lines in the linear section, however, are derived from an empirical equation proposed by Smith (1936, equation i) to relate photosynthetic rate (P) and light intensity (I), namely: = p (p;i,-where K is a constant that locates the curve upon the scale of light intensity. This equation has been applied to photosynthesis curves of other unicellular algae by Smith (1936Smith ( , 1937 and Winokur (1948Winokur ( , 1949. It was found better in relation to the present data than certain other empirical relations (e.g.…”

Section: Photosynthetic Characteristics Of Asterionellamentioning

confidence: 82%

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Photosynthetic Characteristics of Some Freshwater Plankton Diatoms in Relation to Underwater Radiation

1957

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Section: Photosynthetic Characteristics Of Asterionellamentioning

confidence: 82%

“…The use of younger cultures may have given consistently higher photosynthetic rates (cf. Winokur, 1949). However, with one exception, the rates recorded (Table 2, facing p. 33) for the lower density cultures (< 15,000 cells/ ml.)…”

Section: Validity Of the Measured Rates Of Photosynthesismentioning

confidence: 85%

Photosynthetic Characteristics of Some Freshwater Plankton Diatoms in Relation to Underwater Radiation

1957

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“…Before the experiment the organisms were washed twice in a medium without trace elements, CN5-TE, (Table 1), and then resuspended and diluted in this medium to a suitable concentration, generally about 5 jil algae/ml suspension (measured after centrifugation for 10 min at 1000 x g). This is equal to a dry weight of 1.3 mg/ml (Winokur 1948) or an extinction value of 0.150 measured at 450 nm with the lightspot galvanometer as described above.…”

Section: Methodsmentioning

confidence: 99%

The Effects of Some Chelating Agents and Their Copper Complexes on Photosynthesis in Scenedesmus quadricauda

Fängström

1972

Physiologia Plantarum

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The effects on apparent photosynthesis in the green alga Scenedesmus quadricauda of four chelating substances, 8‐hydroxyquinoline (= oxine), β‐isopropyltropolone (=β‐thujaplicin), sodium dimethyldithiocarbamate and 3‐(β‐hydroxyethyl)‐C‐pentamethylene‐3‐aza‐dithiocarbamate have been investigated. The first three compounds mentioned had all an inhibitory effect on photosynthesis, measured as oxygen production with a manometric, a volumetric or a polarographic method. In combination with certain concentrations of CuSO4 bimodal dose response curves were observed, similar to those obtained on the growth of different microorganisms. Calculations of the amounts of different complexes that appeared in the nutrient solutions during the experiments are compared with the recorded degrees of inhibition. The results strongly indicate that the 1: 1‐complexes between Cu2+ and the chelating substances are the most toxic agents at low concentrations of these compounds.

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“…Chlorophyll is ex])ressed as mg {a+b) i>er mm^ of wel vohiine of Ibe algae. Wet votumes were obtained by centrifugation according lo Winokur (1948).…”

Section: Methodsmentioning

confidence: 99%

“…iui estimate (tf tbe approximate rale of photosynfhesis per unit of chlorophyll at low lighl intensity, hut were forced to combine the results of investigations made by two different workers. The rate of photosynthesis in tbe green alga CJilorella pyrenoidosa was taken from Winokur (1948) and the concentration of chlorophyll from Kok (1953). Chlorophyll a and b are likely tbe absolutely dominating pbotosyntbesis pigments in the green alga Chlorella.…”

Section: Iutroductionmentioning

confidence: 99%